Although it says it measures eCO2 which I assume it doesn't seem to have anything to do with actual CO2 measurements. VOCs of any kind cause spikes in VOCs and eCO2. So when you swipe the floor, expect the ad to jump. If you really want to measure CO2, look elsewhere. You need an NDIR sensor like https://www.amazon.com/dp/B014PDFP9S/ref=emc_b_5_t to read CO2.
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